There are several ways to view side-by-side 3D photos.
The easiest way is with 3D prism type glasses (parlor
viewer). They are purchased with 3D books or from 3D supply
companies that use side-by-side 3D photos. These are not
colored or polorized glasses. Sometimes there is some
magnification for enlargement purposes. These are the kind
of lenses found in parlor viewers from the late 1800's
through the early 1900's. (Many are still around today.)
To "free view", that is, without glasses you will need to
look at the left picture with the left eye and the right
with the right eye. Some people can do this just by looking
beyound the 2 pictures seeing a center 3D image and a left
and right perifieral image also visable thus it will seam as
if there are 3 pictures out there with the center looking
correct and in 3D.
There is however, an easier way? With 3D pictures on the
screen, position your face about 18" from your computer
screen. By placing your index fingers pointing up against
your nose, place your right index finger against the right
side of the end of your nose. Place your left index finger
against the left side of the end of your nose. Close your
left eye. Looking through your right eye, position your
right finger so that it blocks the left image from your
right eye. Close your right eye. Look through your left
eye. Position your left finger so that it blocks the right
image from your left eye. Now open both eyes and look past
the image. The two images should come together forming a
single 3D view. You may now be able to bring your index
fingers together in front of your nose then drop them
down out of view while keeping the center 3D view. Once
this is achieved and using your arrow keys, scroll through
all the photos.